To Ty's surprise, he found the wereshark particularly intriguing. Its body was muscular and firm, its piscine head had a huge mouth with sharp teeth that could bite the head off anyone who might fight it, but most strikingly of all, between its legs it had two penises. How could Ty turn down that prospect?
He wished to turn into one himself, and felt his body contort. It grew longer and more lithe, giving him the figure of a swimmer, and his muscles expanded subtly- he wouldn't be as muscular as the other wolf, but he felt more attractive in a weird sort of way. His fingers and toes became clawed and sharp, and his skin roughened up to a more aquatic texture. A muzzle protruded from Ty's face and he felt his teeth grow way sharper and firmer, soon able to bite through flesh and bone, while a fin extended from the top of his head and slits formed in his neck as he developed gills and became amphibious.
He had to stop stroking his erection for a moment as he felt the changes affect his lower body dramatically. His backbone pushed out to form a full tailbone, with tailfins forming around its end. Ty was surprised to realize he could freely move it like any other limb. Soon after he noticed the fins forming on his arms and legs, improving how well he could swim. But naturally, the biggest change occurred in his crotch. Just above his penis, a second shaft rapidly extended from his skin, just as hard and eager as the first.
Ty felt even more happy about his wereshark form than he had hoped, and knew he couldn't wait to go fuck someone like this...